So sorry you've had this problem! Sounds like the experience has been a major "turn off" to in-lines.
This is too bad. I LOVE my in-lines and they're by far, my main deer guns. In southern Michigan we can't use center fire rifles during deer season. I've taken many a deer out past 200 yards with in-lines. Deadly, accurate and reliable. Especially in bad weather.
I'd hate to see you throw in the towel just yet... Frustration stinks!
All the best,
Black Powder: Not because it is easy, but because it is hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win...